Put the water, butter, salt and sugar in a stainless pan and bring to a boil.
As soon as the mixture reaches the boil, and the butter is completely melted, take it off the heat and add all the flour at once.
Place the pan back on a medium flame and stir vigorously with a wooden spoon for about 30 seconds, or until the mixture thickens and forms a mass that does not stick to the pan. The mixture should be dried out by stirring over heat for another 1 to 2 minutes.
Remove the pan from the heat and transfer the mixture to a clean bowl.
Crack the eggs into a bowl "before" adding to the dough. Add the eggs to the dough, 1 at the time, making sure that each is fully incorporated before adding the next. Use the mixer paddle tool for this job.